When in Develop mode everything looks great (i'm talking about night pictures, especially where there is dark sky). Once I finish working I transfer my tiff (that looks great in ANY zoom while in Develop mode) to jpeg - my settings are untouched and the jpeg pictures are a bit noisy in the sky with some halos and miscolored lines - frankly look completely different.

Look at the sky - it looks horrible, some halos, no smoothness, some purple colors....

All of that I do NOT see in LR in tiff.

Here's my settings when I transfer to jpeg:

In LR and in PS I work using ProPhoto RGB; when I transfer I use sRGB (but even if I use ProPhoto - same results). If open this tiff file in PS and transfer it to jpeg at maximum - same results.

When in Develop mode everything looks great (i'm talking about night pictures, especially where there is dark sky). Once I finish working I transfer my tiff (that looks great in ANY zoom while in Develop mode) to jpeg - my settings are untouched and the jpeg pictures are a bit noisy in the sky with some halos and miscolored lines - frankly look completely different.

What processing are you doing to the image file in LR and then in PS? Please provide a screenshot of the LR Detail panel settings applied to the original camera image file before creating the TIFF file.

Yeah, it's all zeroes in my LR, so there's no problem there. I noticed that when I transfer from LR to PS as tiff the picture looks really bad in open areas like sky or water, miscolored, really horrible

In PS if I save it as jpeg this is what i get. Now, when I do whatever I want to the image and transfer it back to LR all that dissappear but still when I save as jpeg some stuff remains in the pic. My color space set prophoto in LR and PS. I really need help with it.

Yeah, it's all zeroes in my LR, so there's no problem there. I noticed that when I transfer from LR to PS as tiff the picture looks really bad in open areas like sky or water, miscolored, really horrible

What is the "original file" type you are using in LR (Camera Raw, TIFF, JPEG)? If it is a camera raw file (NEF, CR2, DNG, etc) you need to apply Sharpening and Noise Reduction to it in the LR Develop module. Does the "original file" look the same when viewed in the Library module as in the Develop module? If not how does it differ?

I checked Detail panel in LR and again, before I do anything with my raw files I set everything to 0 in Detail (but even if I would leave it as default (25) it wouldn't make the difference)

BUT: The image does look different in Library and in Develop. In develop it's smooth in the sky and no lines with halos or anything of that sort. In Library it's a bit "dirtier" in the sky and with some noticeable lines in the sky (like shades) as if LR in Library doesn't have any resolution (or colors) to smooth it out. But in Develop it does a great job - looks great.

Now for the experiment sake I imported a raw file into LR, I did not do anything to it (except bringing Exposure down to -0.80), I checked again Detail page and set to 0 everything there, and compared the image in Library and in Develop: same crap, some lines in Library and great in Develop.

Here's a pic in LR in Library mode (see the dark sky and some pixels showing, some dark purple colors, looks really bad)

I can't give you the pic in Develop mode for in order to show smoothness and a nice look I need to upload the tiff file (remember: if I transfer from tiff to jpeg in LR the quality as it is in Library mode) but believe me in tiff file in Develop mode the sky looks nice, and transition between darker and lighter areas in the sky is smooth and fine.

And btw I understand the difference in quality between Lib and Dev mode and I don't really care about it, my concern is why LR exports from tiff to jpeg with a "quality" that you see in Lib mode - that's the problem for me. And again it is only noticeable in gradient parts of the picture i.e. sky or water, where you go slightly from light to dark and vice versa. Also if I open this tiff in PS and export it to jpeg with maximum quality - same bad results and jpeg's "quality" is visible anywhere: in ACD See app, on Flickr, etc.

Need help with it, really, for I do a lot of night photography and smoothing it out in various programs using masks and what not doesn't help much - it is still noticeable but again looks smooth and great in tiff in dev mode in LR.

And btw I understand the difference in quality between Lib and Dev mode and I don't really care about it, my concern is why LR exports from tiff to jpeg with a "quality" that you see in Lib mode - that's the problem for me. And again it is only noticeable in gradient parts of the picture i.e. sky or water, where you go slightly from light to dark and vice versa. Also if I open this tiff in PS and export it to jpeg with maximum quality - same bad results and jpeg's "quality" is visible anywhere: in ACD See app, on Flickr, etc.

Concerning the posted "night shots' you say, "I checked Detail panel in LR and again, before I do anything with my raw files I set everything to 0 in Detail (but even if I would leave it as default (25) it wouldn't make the difference)."

Most night scenes are shot with high ISO and/or long shutter times to achieve proper exposure. This increases noise levels in the image and requires using the Luminance and Color Noise Reduction controls to reduce the noise. You need to adjust them at 1:1 Zoom view and then adjust the Sharpening controls to restore edge detail. You may then need to go back and increase the Noise Reduction controls slightly. It's a fine balance and with high ISO images you may need to sacrifice some sharpness at the 1:1 view to keep noise levels low. If you plan on doing further editing in PS I also suggest that the Basic panel controls also be properly adjusted before creating the TIFF file. With these LR settings applied tried creating the JPEG file again.

ISSUE #2 - Incompatible Monitor Profile

As Ian Lyons mentioned you may have an incompatible monitor profile or simply improper control adjustment. The sky banding in the sky area is not as pronounced on my calibrated monitor as you describe. if I increase Exposure by ~+2 EV in LR it starts to look closer to what you describe. Do you use a monitor calibrator such as an i1 Display or Spyder device?

Hey there, I just pulled this topic up in a search for the same issue you posted here. I am having the exact same issue that you described here, library and develop module not matching. Develop module image looks great then library image looks lesser quality. Once exported to JPEG the image has a lot of noise and halos. I am using a 2017 macbook pro 15", so I do not think this is the problem. Plus when I email the image to myself after having been exported to JPEG the same noise shows up when viewed on my Iphone or other tablet.